(19)

(11)

EP 3 129 587 A1

(12)

(43) Date of publication: 15.02.2017 Bulletin 2017/07 (21) Application number: 15777010.8 (22) Date of filing: 07.04.2015

(51) International Patent Classification (IPC):  E21B 47/00(2012.01) G01V 3/38(2006.01) G01V 3/18(2006.01) (86) International application number: PCT/US2015/024688 (87) International publication number: WO 2015/157268 (15.10.2015 Gazette 2015/41)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA (30) Priority: 10.04.2014 US 201461978126 P (71) Applicant: Halliburton Energy Services, Inc. Houston, TX 77032-3219 (US)	(72) Inventors: WU, Dagang Katy, TX 77494 (US) DONDERICI, Burkay Houston, TX 77098 (US) (74) Representative: Jennings, Michael John et al A.A. Thornton & Co. 10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)